A guide to the deep-water sponges of - NMFS Scientific Publications ...
A guide to the deep-water sponges of - NMFS Scientific Publications ...
A guide to the deep-water sponges of - NMFS Scientific Publications ...
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102 Pr<strong>of</strong>essional Paper <strong>NMFS</strong> 12<br />
85. Amphilectus digitatus (Miklucho-Maclay, 1870)<br />
Description. This species appears as described by<br />
Koltun (1959) and may be massive-lobate, laminate,<br />
dactylate, funnel-shaped, or vase-like, and usually has a<br />
stalk. The surface is smooth. The consistency is elastic,<br />
easily compressible, but difficult <strong>to</strong> tear. Vase-like forms<br />
<strong>to</strong> 10 cm in height; funnel-shaped forms <strong>to</strong> more than<br />
60 cm in diameter and 30 cm in height. Color in life is<br />
light grey, creamy white, yellow or brown.<br />
Skeletal structure. Spicules are styles (130–280 × 8–19<br />
µm) and palmate isochelae (12–28 µm).<br />
Zoogeographic distribution. Widespread and locally<br />
common. In Alaska – central Aleutian Islands and eastern<br />
Gulf <strong>of</strong> Alaska. Elsewhere – North Pacific Ocean<br />
(Kamchatka Coast, Bering Sea, British Columbia), and<br />
Arctic Ocean (Chukchi Sea and East Siberian Sea).<br />
Habitat. In Alaska – central Aleutian Islands (attached<br />
<strong>to</strong> pebbles at a depth <strong>of</strong> 100 m), eastern Gulf <strong>of</strong> Alaska<br />
(attached <strong>to</strong> bedrock, boulders, and cobbles at depths<br />
between 152 and 218 m). Elsewhere – reported at<br />
depths between 9 and 291 m.<br />
Pho<strong>to</strong>s. 1) Specimen collected at a depth <strong>of</strong> 100 m<br />
in <strong>the</strong> central Aleutian Islands. Grid marks are 1 cm 2 .<br />
2) Same specimen as in pho<strong>to</strong> 1 in situ (center). 3)<br />
Specimen collected at a depth <strong>of</strong> 165 m in <strong>the</strong> eastern<br />
Gulf <strong>of</strong> Alaska. Grid marks are 1 cm 2 . 4) Same specimen<br />
as in pho<strong>to</strong> 3 in situ.